International Workers' Day (May Day) is a celebration of the international labour movement and left-wing movements. It commonly sees organized street demonstrations and marches by working people and their labour unions throughout most of the world.
May Day is an ancient northern hemisphere spring festival and usually a public holiday. it is also a traditional spring holiday in many cultures.May 1 is a national holiday in more than 80 countries. It is also celebrated unofficially in many other countries.